Coil.limits

Coil.limits()

Return the VOP entries of the check limits a design is made under in this coil; none unless its transmit maps have VOPs beside them.

vop_file is <coil>_vops.npz beside the transmit maps <coil>.npz; vop_drive_per_hz the drive of every channel, in the unit of the maps and the VOPs, per Hz of a pulse’s amplitude, with which the channels’ rotating fields, half their minus, add up to the pulse’s nominal amplitude at the isocentre through the default_shim; vop_default_shim that shim, a magnitude and a phase per channel; and vop_head_limit and vop_local_limit, HEAD_SAR_LIMIT and LOCAL_SAR_LIMIT.